/*
 * Copyright � 2002-2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Reflection;
using FakeItEasy;
using NUnit.Framework;
using Spring.Caching;
using Spring.Context;

namespace Spring.Aspects.Cache;

/// <summary>
/// Unit tests for the CacheParameterAdvice class.
/// </summary>
/// <author>Aleksandar Seovic</author>
[TestFixture]
public sealed class CacheParameterAdviceTests
{
    private IApplicationContext mockContext;
    private CacheParameterAdvice advice;
    private ICache cache;

    [SetUp]
    public void SetUp()
    {
        mockContext = A.Fake<IApplicationContext>();

        advice = new CacheParameterAdvice();
        advice.ApplicationContext = mockContext;

        cache = new NonExpiringCache();
    }

    [Test]
    public void TestSimpleParameterCaching()
    {
        MethodInfo method = typeof(SimpleCacheParameterTarget).GetMethod("Save");
        object[] args = new object[] { new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian") };

        ExpectCacheInstanceRetrieval("cache", cache);

        // parameter value should be added to cache
        advice.AfterReturning(null, method, args, null);
        Assert.AreEqual(1, cache.Count);
        Assert.AreEqual(args[0], cache.Get("Nikola Tesla"));
    }

    [Test]
    public void TestSimpleWithMethodInfoParameterCaching()
    {
        MethodInfo method = typeof(SimpleWithMethodInfoCacheParameterTarget).GetMethod("Save");
        object[] args = new object[] { new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian") };

        ExpectCacheInstanceRetrieval("cache", cache);

        // parameter value should be added to cache
        advice.AfterReturning(null, method, args, null);
        Assert.AreEqual(1, cache.Count);
        Assert.AreEqual(args[0], cache.Get("Save-Nikola Tesla"));
    }

    [Test]
    public void TestMultipleParameterCaching()
    {
        MethodInfo method = typeof(MultipleCacheParameterTarget).GetMethod("Save");
        object[] args = new object[] { new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian") };

        ExpectCacheInstanceRetrieval("cache", cache);
        ExpectCacheInstanceRetrieval("cache", cache);

        // parameter value should be added to both cache
        advice.AfterReturning(null, method, args, null);
        Assert.AreEqual(2, cache.Count);
        Assert.AreEqual(args[0], cache.Get("Nikola Tesla"));
        Assert.AreEqual(args[0], cache.Get("Serbian"));
    }

    [Test]
    public void TestConditionParameterCaching()
    {
        MethodInfo method = typeof(ConditionCacheParameterTarget).GetMethod("Save");
        object[] args = new object[] { new Inventor("Nikola Tesla", new DateTime(1856, 7, 9), "Serbian") };

        // parameter value should not be added to cache
        advice.AfterReturning(null, method, args, null);
        Assert.AreEqual(0, cache.Count);
    }

    private void ExpectCacheInstanceRetrieval(string cacheName, ICache cacheToReturn)
    {
        A.CallTo(() => mockContext.GetObject(cacheName)).Returns(cacheToReturn).Once();
    }
}

public interface ICacheParameterTarget
{
    void Save(Inventor inventor);
}

public sealed class SimpleCacheParameterTarget : ICacheParameterTarget
{
    public void Save([CacheParameter("cache", "Name")] Inventor inventor)
    {
    }
}

public sealed class SimpleWithMethodInfoCacheParameterTarget : ICacheParameterTarget
{
    public void Save([CacheParameter("cache", "#Save.Name + '-' + Name")] Inventor inventor)
    {
    }
}

public sealed class MultipleCacheParameterTarget : ICacheParameterTarget
{
    public void Save([CacheParameter("cache", "Name")] [CacheParameter("cache", "Nationality")] Inventor inventor)
    {
    }
}

public sealed class ConditionCacheParameterTarget : ICacheParameterTarget
{
    public void Save([CacheParameter("cache", "Name", Condition = "Nationality == 'French'")] Inventor inventor)
    {
    }
}
